[OpenWrt-Devel] WAN dhcp client doesnt recognize unplugged cable and doesnt request new IP on replugged

[Conor O'Gorman]

On 15/05/15 10:48, Jakub Jančo wrote:
> Hello,
> After I unplug cable:
>
> ifconfig
> eth0      Link encap:Ethernet  HWaddr 14:CC:20:4D:3D:B5
>            inet addr:10.1.5.246  Bcast:10.1.5.255  Mask:255.255.255.0
>            inet6 addr: fe80::16cc:20ff:fe4d:3db5/64 Scope:Link
>            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>            RX packets:747 errors:0 dropped:0 overruns:0 frame:0
>            TX packets:896 errors:0 dropped:0 overruns:0 carrier:0
>            collisions:0 txqueuelen:1000
>            RX bytes:84708 (82.7 KiB)  TX bytes:487679 (476.2 KiB)
>            Interrupt:4
>
> ip link
> 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state
> UP mode DEFAULT group default qlen 1000
>      link/ether 14:cc:20:4d:3d:b5 brd ff:ff:ff:ff:ff:ff
>
> After plug in cable, no change, no logs.
>
> ModelTP-Link TL-WR1043N/ND v2 Firmware Version OpenWrt Barrier Breaker
> 14.07 / LuCI Trunk (svn-r10472) Kernel Version3.10.49

Do you have the switch configured correctly? You can use swconfig to 
check the physical port status.
http://wiki.openwrt.org/toh/tp-link/tl-wr1043nd
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